I have what I believe is a 1985 C-6 transmission in my '70 XR7. It does have AH 7-17-85 stamped on one side of the transmission, and I read on another web-site that C-6 transmissions have 17 bolts on the transmission pan - mine does. So given this data I think it's a C-6 . If I'm way off pls. let me know. What type of transmission fluid should I put in the car?? I'd like to get the Cougar out this weekend - so fast responses would be greatly appreciated . I got into trouble when I had the radiator sent out for a re-core, and snapped a transmission cooling line when removing it - the beginning of a real long night and story. Oh, it's a 3-speed automatic.